Envelope closure



Patented Nov. 30, 1937 UNITED vSTATES PATENT OFFICE 2 Claims.

This invention relates to improvements in envelopes, particularly envelopes for the reception of photographic prints or films, which however may also be used for any other suitable purpose, and it is the principal object of my invention to provide an envelope of this character having a readily operated closure which notwithstanding its sim',- plicity permits a convenient handling and presents an efcient protection for its contents and allows ready removal of the same.

Another obj ect of my invention is the provision of an envelope which is simple and inexpensive in itsv construction, yet durable and highly efcient in use.

A further object of my invention is the provision of an envelope equipped With means for conveniently carrying the envelope.

A still further object of the invention is the provision of light-proof envelopes made of suitable material and having tongues of various forms and shapes struck or cut from the material of the envelope and adapted to be engaged, by suitably bending the flap from which said tongues are formed, with slots provided on the body of the envelope.

These and other objects and advantages of my invention will become more fully known as the description thereof proceeds, and will then be specifically dened in the appended claims.

In the accompanying drawing forming a material part of this disclosure:

Fig. l is a perspective View of an envelope provided with a closure constructed according to my invention with its flap open.

Fig. 2 is a fragmentary section through the envelope Figure 1.

Fig. 3 is a fragmentary view of an envelope provided with a modified form of closing means and a handle with the closing flap open.

Fig. 4 illustrates another modified form of envelope closure with a handle thereon, in open position.

Fig. 5 shows the envelope, Figure 4 closed.

Fig. 6 illustrates a still further modification of my envelope.

As illustrated in Figures 1 and 2, the envelope I IJ of any suitable material has its closing llap I l of strong material such as card-board o-r the like attached to the upper end I2 of the front wall of the envelope, and provided in approximately its middle with a substantially triangular tongue I3 formed by suitably slitting the material, as at I4. To the front wall of the envelope, near its upper somewhat curved edge a strip I5 also of strong material is attached and is provided with a longitudinally extending slot I6 adapted to receive the tongue I3 when the closure flap is folded into closing position. y

As shown in Figure 3, the envelope I1 has made integrally therewith a closing ilap I8, to the inner 5 face of which is pasted or otherwise attached a strong card I 9 having its material slitted on a curve, as at to form a tongue 2|, and provided with an opening 22 serving as a handle, co-operating with a similar opening 23 in a card 24 1 pasted, or otherwise secured to the material of the envelope Il'. This card is slitted as at 25 for the reception of the tongue 2| when the closure flap is folded to allow the engagement between tongue and slit. 15

In the form of my invention illustrated in Figures 4 and 5, the flap 32 for the closure is slitted, as at 33, to form a closing tongue 34, and lhas a handle 35 formed therewith having an opening' 36, and when the ap is open, as shown in Figure 2O 5, this handle is located at the iront of the envelope. A card 31 having an oval slot 38 formed therein for the reception of they tongue 34 in the closed position of the envelope as' shown in Figure 6, the envelope being designated 39.

In the form of my invention illustrated in Figure 6, the envelope 40 has its flap 4I formed integrally therewith and strengthened. An arcuate slot or slit 42 in the ap forms a tongue 43 substantially on the arcof a circle to engage in the folded position'of the envelope flap a substantially oval slot 44 in a card 45'.

The operation and use of the various forms of my envelopes will be entirely clear from the above description by simultaneously having reference to the drawing, and it will be evident that I have invented a very handy and practical envelope with an efficient and readily operating closure.

It will be understood that I have described and shown the preferred forms of my envelope only as a few examples of the many possible ways to practically construct the same, and that I may make such changes in its construction as come within the scope of the appended claims without departure from the spirit of my invention, and 45 the principle involved.

Having thus described my invention, what I claim as new and desire toI secure by Letters Patent is:

l. A closure for envelopes comprising a closure flap attached to the envelope and having its material slotted on the arc of a circle to form a tongue, a card having an opening attached to said flap and serving as a handle, a card secured to the material of the envelope having an opening formed on the arc of a circle for the reception of said tongue when the closure flap is folded upon the envelope.

2. A closure for envelopes comprising a flap 5 formed with said envelope sltted to provide a closing tongue, a handle formed with said flap amoyme and having an opening and normally located at the front of the envelope, a card having an oval slot attached to the envelope for the reception of said closing tongue in the closed position of the envelope.

J U'LIUS SCI-IUKNECHT. 

